{
  "id": "iris",
  "sourceUrl": "https://archive.ics.uci.edu/dataset/53/iris",
  "archiveUrl": "https://archive.ics.uci.edu/static/public/53/iris.zip",
  "sourceFile": "bezdekIris.data",
  "sha256": "0fed2a99db77ec533a62dc66894d3ec6df3b58b6a8f3cf4a6b47e4086b7f97dc",
  "archiveSha256": "d11fe30213d36434a0879aab7cb00ce3c812eb7ba2495874438abff7b7b762e9",
  "retrieved": "2026-09-08",
  "rows": 150,
  "columns": [
    "sepal_length",
    "sepal_width",
    "petal_length",
    "petal_width",
    "species"
  ],
  "chartRows": 150,
  "selectedRows": [
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  "selection": "All source rows",
  "missingCells": 0,
  "preview": [
    [
      "5.1",
      "3.5",
      "1.4",
      "0.2",
      "Iris-setosa"
    ],
    [
      "4.9",
      "3.0",
      "1.4",
      "0.2",
      "Iris-setosa"
    ],
    [
      "4.7",
      "3.2",
      "1.3",
      "0.2",
      "Iris-setosa"
    ],
    [
      "4.6",
      "3.1",
      "1.5",
      "0.2",
      "Iris-setosa"
    ],
    [
      "5.0",
      "3.6",
      "1.4",
      "0.2",
      "Iris-setosa"
    ],
    [
      "5.4",
      "3.9",
      "1.7",
      "0.4",
      "Iris-setosa"
    ],
    [
      "4.6",
      "3.4",
      "1.4",
      "0.3",
      "Iris-setosa"
    ],
    [
      "5.0",
      "3.4",
      "1.5",
      "0.2",
      "Iris-setosa"
    ]
  ],
  "chartPreview": [
    [
      "petal_length",
      "petal_width"
    ],
    [
      "1.4",
      "0.2"
    ],
    [
      "1.4",
      "0.2"
    ],
    [
      "1.3",
      "0.2"
    ],
    [
      "1.5",
      "0.2"
    ],
    [
      "1.4",
      "0.2"
    ],
    [
      "1.7",
      "0.4"
    ],
    [
      "1.4",
      "0.3"
    ],
    [
      "1.5",
      "0.2"
    ]
  ],
  "name": "Iris",
  "creator": "R. A. Fisher (1936)",
  "doi": "10.24432/C56C76",
  "answer": "Download the UCI Iris data as a headered CSV and inspect petal length against petal width. This resource pins bezdekIris.data, keeps all 150 source rows, and identifies the version so the plotted values can be reproduced.",
  "columnNotes": "Four measurements describe sepal length, sepal width, petal length and petal width in centimetres. The final column identifies species. The repository includes both iris.data and bezdekIris.data and documents differences from Fisher’s published records; this resource consistently uses bezdekIris.data.",
  "interpretation": "The plotted pair is petal length and petal width, retaining every row and the original numeric values. A pooled scatter can show association across the sample, but species membership may contribute to that pattern. Use the full CSV to compare species separately before describing a within-species relationship. Exactly overlapping points remain separate observations in the download.",
  "limitation": "This historical teaching dataset is not a random sample of all irises. It does not establish current population proportions or a causal effect of one petal measurement on another. Our chart uses one colour for all observations, so it should not be mistaken for a species classifier.",
  "units": "Both plotted measurements are in centimetres.",
  "x": "Petal length (cm)",
  "y": "Petal width (cm)",
  "url": "/datasets/iris/"
}